[FFmpeg-trac] #6103(undetermined:new): When trying to set the audio track metadata language to 'und' (undefined) ffmpeg switches to 'eng' (English)

[FFmpeg]

#6103: When trying to set the audio track metadata language to 'und' (undefined)
ffmpeg switches to 'eng' (English)
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             Reporter:  vsanchez     |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:  metadata     |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by peter_b):

 btw: In order to rule out syntax issues, I've also tested it with
 "language=ger" (German) and "language=fra" (French). These languages work
 as expected.

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Ticket URL: <https://trac.ffmpeg.org/ticket/6103#comment:4>
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